| Date of Death | Deceased Cardinals (43) |
| 1900.01.17 | Cardinal-Deacon of S. Eustachio (1899.06.22 – 1900.01.17) Secretary of Sacred Congregation of Bishops and Regulars (1896.12.24 – 1900.01.17) |
| 1900.02.01 | Cardinal-Priest of Ss. Marcellino e Pietro (1896.12.03 – 1900.02.01) Vicar General for the Vicariate of Rome of Roma (Italy) (1899.12.14 – 1900.02.01) |
| 1900.03.12 | Cardinal-Priest of S. Marcello (1877.03.20 – 1900.03.12) |
| 1900.03.26 | Cardinal-Bishop of Palestrina (1897.04.19 – 1900.03.26) Prefect emeritus of Sacred Congregation of Studies (1893.06.22 – 1897.04.19) |
| 1900.05.05 | Cardinal-Priest of S. Bartolomeo all’Isola (1896.06.25 – 1900.05.05) Metropolitan Archbishop of Salzburg (Austria) (1890.06.26 – 1900.05.05) |
| 1901.01.25 | Cardinal-Priest of S. Lorenzo in Panisperna (1890.06.26 – 1901.01.25) Metropolitan Archbishop of Ravenna (Italy) (1887.05.23 – 1901.01.25) |
| 1901.07.27 | Cardinal-Priest of S. Agostino (1898.03.24 – 1901.07.27) Metropolitan Archbishop of Zaragoza (Spain) (1901.04.18 – 1901.07.27) |
| 1902.01.18 | Cardinal-Priest of S. Balbina (1901.04.18 – 1902.01.18) Metropolitan Archbishop of Benevento (Italy) (1898.02.05 – 1902.01.18) |
| 1902.02.06 | Cardinal-Priest of S. Callisto (1899.06.22 – 1902.02.06) Secretary of Sacred Congregation of the Propagation of the Faith (1893.06.19 – 1902.02.06) |
| 1902.03.23 | Cardinal-Priest of S. Stefano al Monte Celio (1899.12.14 – 1902.03.23) Metropolitan Archbishop of Gorizia e Gradisca (Italy) (1898.03.24 – 1902.03.23) |
| 1902.04.25 | Cardinal-Priest of Ss. Nereo ed Achilleo (1901.04.18 – 1902.04.25) Metropolitan Archbishop of Ravenna (Italy) (1901.04.15 – 1902.04.25) |
| 1902.07.10 | Cardinal-Priest of S. Girolamo dei Croati (1894.05.21 – 1902.07.10) Bishop of Oradea Mare (Romania) (1887.05.26 – 1902.07.10) |
| 1902.07.22 | Cardinal-Priest of S. Lorenzo in Lucina (1896.11.30 – 1902.07.22) Metropolitan Archbishop emeritus of Poznań (Poland) (1866.01.08 – 1886.02.02) Prefect of Sacred Congregation of the Propagation of the Faith (1892.01.26 – 1902.07.22) |
| 1902.11.22 | Cardinal-Priest of S. Prassede (1893.01.16 – 1902.11.22) Pro-Datary of His Holiness of Apostolic Dataria (1897.05.29 – 1902.11.22) |
| 1903.01.15 | Cardinal-Bishop of Porto e Santa Rufina (1896.11.30 – 1903.01.15) Cardinal-Priest of S. Lorenzo in Damaso in commendum (1899.12.14 – 1903.01.15) Vice-Chancellor of Apostolic Chancery (1899.12.14 – 1903.01.15) Secretary of Commission of Roman and Universal Inquisition (1896 – 1903.01.15) |
| 1903.06.19 | Cardinal-Priest of Ss. Andrea e Gregorio al Monte Celio (1893.01.19 – 1903.06.19) Metropolitan Archbishop of Westminster (England) (1892.04.08 – 1903.06.19) Superior General of Saint Joseph’s Missionary Society of Mill Hill (1868 – 1903.06.19) |
| 1903.12.09 | Cardinal-Priest of Ss. Bonifacio ed Alessio (1903.08.27 – 1903.12.09) Metropolitan Archbishop of Valencia (Spain) (1898.03.24 – 1903.12.09) |
| 1904.04.14 | Cardinal-Priest of S. Marco (1887.11.25 – 1904.04.14) Metropolitan Archbishop of Palermo (Italy) (1871.10.27 – 1904.04.14) |
| 1904.11.14 | Cardinal-Bishop of Sabina (1894.05.18 – 1904.11.14) Substitute for General Affairs emeritus of Apostolic Secretariat (1882.12.16 – 1893.01.16) |
| 1905.01.01 | Cardinal-Priest of S. Giovanni a Porta Latina (1887.03.17 – 1905.01.01) Metropolitan Archbishop of Reims (France) (1874.12.21 – 1905.01.01) |
| 1905.04.28 | Cardinal-Priest of S. Girolamo dei Croati (1903.11.12 – 1905.04.28) Secretary emeritus of Sacred Congregation of the Propagation of the Faith (1891.07.24 – 1893.06.07) |
| 1905.09.07 | Cardinal-Deacon of Ss. Cosma e Damiano (1896.12.03 – 1905.09.07) Master of the Sacred Palace emeritus of Prefecture of the Holy Apostolic Palaces (1887.06.25 – 1896.11.30) |
| 1906.01.19 | Metropolitan Archbishop of Sevilla (Spain) (1895.12.02 – 1906.01.19) |
| 1906.01.25 | Cardinal-Priest of S. Croce in Gerusalemme (1889.05.27 – 1906.01.25) Metropolitan Archbishop of Mechelen (Belgium) (1884.03.24 – 1906.01.25) |
| 1906.02.10 | Cardinal-Priest of S. Pietro in Vincoli (1896.06.25 – 1906.02.10) |
| 1906.02.15 | Cardinal-Priest of S. Pancrazio (1895.12.02 – 1906.02.15) Archbishop of Ancona e Umana (Italy) (1904.09.14 – 1906.02.15) |
| 1906.04.14 | Cardinal-Priest of S. Maria in Cosmedin pro hac vice Title (1903.11.12 – 1906.04.14) |
| 1906.04.21 | Cardinal-Priest of S. Maria Nuova (1898.03.24 – 1906.04.21) Metropolitan Archbishop of Rennes (France) (1893.06.15 – 1906.04.21) |
| 1906.12.29 | Cardinal-Deacon of S. Maria ad Martyres (1901.04.18 – 1906.12.29) Secretary emeritus of Sacred Congregation for Extraordinary Ecclesiastical Affairs (1896.08.14 – 1901.04.15) |
| 1906.12.29 | Cardinal-Deacon of S. Maria in Domnica (1901.04.18 – 1906.12.29) Pro-Prefect of Congregation for Sacred Rites (1904.01.28 – 1906.12.29) |
| 1907.03.29 | Cardinal-Deacon of S. Maria in Via Lata (1896.11.30 – 1907.03.29) Prefect emeritus of Prefecture of the Holy Apostolic Palaces (1886.08.15 – 1889.02.11) |
| 1907.08.10 | Cardinal-Priest of S. Onofrio (1894.05.21 – 1907.08.10) Metropolitan Archbishop of Bologna (Italy) (1894.05.21 – 1907.08.10) |
| 1907.08.24 | Cardinal-Priest of S. Bernardo alle Terme (1903.11.12 – 1907.08.24) |
| 1907.10.15 | Cardinal-Deacon of S. Agata alla Suburra (1894.05.18 – 1907.10.15) Prefect of Sacred Congregation of the Index (1896.10.01 – 1907.10.15) |
| 1908.01.28 | Cardinal-Priest of S. Maria in Via (1889.12.30 – 1908.01.28) Metropolitan Archbishop of Paris (France) (1886.07.08 – 1908.01.28) |
| 1908.03.17 | Cardinal-Priest of S. Maria della Vittoria (1899.06.22 – 1908.03.17) Patriarch emeritus of Constantinople (1895.11.29 – 1899.06.19) Camerlengo emeritus of Sacred College of Cardinals (1901.04.15 – 1902.06.09) |
| 1908.04.25 | Cardinal-Priest of S. Clemente (1899.06.22 – 1908.04.25) Metropolitan Archbishop of Reggio Calabria (Italy) (1888.03.16 – 1908.04.25) |
| 1908.07.22 | Cardinal-Priest of S. Callisto (1903.06.25 – 1908.07.22) Patriarch emeritus of Constantinople (1901.04.18 – 1903.06.22) Secretary emeritus of Sacred Consistorial Congregation (1892.03.21 – 1903.06.22) |
| 1908.10.26 | Cardinal-Priest of S. Sabina (1899.06.22 – 1908.10.26) Metropolitan Archbishop emeritus of Toulouse (France) (1896.06.25 – 1899.11.27) Camerlengo emeritus of Sacred College of Cardinals (1905.03.27 – 1906) |
| 1908.10.27 | Cardinal-Priest of Ss. Quirico e Giulitta (1896.06.25 – 1908.10.27) |
| 1908.12.19 | Cardinal-Priest of S. Pudenziana (1894.05.21 – 1908.12.19) Metropolitan Archbishop of Bordeaux (France) (1890.06.26 – 1908.12.19) |
| 1909.02.03 | Cardinal-Priest of S. Maria sopra Minerva (1896.12.03 – 1909.02.03) Prefect of Congregation for Sacred Rites (1903.01.07 – 1909.02.03) |
| 1909.02.25 | Cardinal-Priest of S. Pietro in Montorio (1895.12.02 – 1909.02.25) Metropolitan Archbishop of Toledo (Spain) (1898.03.24 – 1909.02.25) |
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